Knife blade



FIG. 1 is a left side elevational view of a knife blade showing my new design, the right side elevational view being a mirror image thereof;

FIG. 2 is a top plan view of the knife blade of FIG. 1, of which the bottom plan view of the knife blade is a mirror image thereof;

FIG. 3 is a front elevational view of the knife blade of FIG. 1; and,

FIG. 4 is a rear elevational view of the knife blade of FIG. 1.

The broken line showing of a knife handle in the drawings is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a knife blade, as shown and described. 